Lubricant compressor



` July 3, 192s.

E. F. PIERCE LUBRI CANT COMPRES SOR Filed Oct. 17,; 1925 JSM- v PatentedJuly 3i, 1928.

UNITED-STATES PATENT oFFicE.

EARL F. PIERCE, OFWINNETKA, ILLINOISASSIGNOR TO THE BASSICK MANUFACTUR-ING COMPANYyO CHICAGO, ILLINOIS, CORPORATION' 0F DELAWARE.

LUBRICANT ooMPREssoR.

Application filed October 17, 1325.v Serial No. 63,081.

i My invention relates to imp'i'ovenients in lubricant compressors andis particularly concerned withimprovements in thattype oflubricant.compressor which is used for l:i supplying lubricant underpressure to a plurality of tittings, the compressor including` acoupling member for successively making sealed contact with the -variousfittings.

Compressors ot the character described A above are usually soconstructed that the b coupling member can be detached t'rom the barrelportion of the compressor so as to permit the escape of air therefromduring the iilling operation. In some eases, a flexible hose isinterposed between the coupling mem ber and the barrel, butwith thisconstruction, aswell as with the constructum in whichthe coupling memberis directly sccured tothe barrel, the coupling member and the combinedhose and coupling member are usually removed from.thecompressor barrelsbefore the latter are lilled.

One of the objects ot Vmy present invention is to provide a compressoroli the char- A acter described, in which the coupling n1ember .or theflexible discharge conduit is connected to the compressor barrel in suchinanner that when it is removed trom the comp presser barrel during.theililling operation the free discharge of -air from the compressorbarrel will occur with a minimum olf' obstruc tion. l l

Another object of my invention is to provide alubricant compressorhaving a discharge conduit or coupling member connected therewith by aswivel con ncction, and in Which a. portion of the compressor barrelitself acts as one of theY swivel members.

Another object is to provide a quick des 4o tachable connection thatwill not be disturbed by accidental rotation oi the compressor barrel.

My invention further contemplates the provision ofa lubricantcompressor, such as described above,\which is simple in construe tion,economical to manufacturennd easy to operate.

Other objects of my invention will appear as this descriptionlnogresses, reference being had to the accompanying drawings, in

which Figure l is a side elevation, partially inl longitudinal section,o'l' a compressor embodying mv improven'ients;

i pressed tightly' against the face of the 'head Figure 2 is a sectiononline of Fi 55 ure l.

Figure 3 is a side elevation of a plug.

In the embodiment ot' the invention selected for illustration thecompressor comprises thcusual barrel l0 in which the piston l2 isreeiprocated by suitable means, such as the scre\vthreaded piston rodlet engaging threads in the removable cap lo'.

At the discharge end the barrel is apertured at 18 and a short integrallip 20 sur` rounds the aperture defining an exit passage o1 lesslengththan diameter. Une side ol this lip is extended at 22 and bentacross opposite the aperture 18, terminating in a U shaped retainingpiece 2d. The usual tiexible tube 20, having the coupling 28 forattachment to the titting on the parts to be lubricated, is, in thisinstance, provided with a special'coupling 30 having a swivel member or.head 32 adapted to slide between the ren tainer 24 and the aperture 18to close the aperture.

ln the aperture l provide sealing means in the form of a cup 34 havingan inlet at 36 and a peripheral bead 38 to hold the edges ot a flexiblescaling washer l0 resiliently pressed outwardly by' a. spring 42. lVhenpressure is developed by movement lof the piston 12, the sealing washeret() will be 32 and form a lubricant tight seal. 85

The head is in turn pressed against the retainer 24 and the ends of thearms ot' said retainer are preferably provided with slight projectionsi4 which tend to hold the parts in place, but do not prevent freeswiveling therebetween.

l'V hen the device is to be packed in small, space it is desirable todetach the tube. Tol prevent loss of lubricant I provide a small solidAplug 46 duplicating the outer contour of the coupling at the end of theconduit.

This application is a continuation in part of my co-pending application,Serial No. 708,007, tiled Api-i121, 1924.

lVithout further elaboration, the foregoing will so fully explain thegist of my invention that others may, by applying current knowl edge,readily adapt the same for use under various conditions of service,Without elimi-v 105 nating certain features Which may properly be saidto constitute the essential items of novelty involved, which items areintended to a discharge conduit, a coupling in the barrelend of saidconduit, said barrel having a discharge opening, laterally open hookmeans Jfor receivingsaid coupling and holding it in sealingrelation withsaid opening, and au-l tomatically1 operable means for positivelyreltaining said coupling against` removal while the lubricant is underpressure.

y 2. Lubricating means comprising a lbarrel having an annular iiange atits discharge end,

a slotted projection formed integrally and lperpendicular to said flangeand spaced from the end thereof`v :rcupf having an linwardlyextending'brini fixed Within said Harige, an apertured sealing discresiliently held against the innervsurfac'e of said brim, anda con`between saidl projection and infima;

pling having an enlarged headadapted to fit said flange and havingsealing contact with said disc.

3. Lubricating means comprising a barrel having an annular flange at itsdischarge end, a slotted projection,perpendicular to and yintegralWithsaid flange and vspaced from the eiid thereof, an apertured cupSecured Within said flange sov as to have its brim lie iush with the endthereof7 an apertured sealing disc in said cup, a spring containedWithin said cup and tending to press said disc outwardly, and a flexibleconduit having a coupling member with anvr enlarged head at one end,said head being adapted `to be laterally inserted between said flangeand said projection and in sealing contact with said disc.

Inv witness whereof, I hereunto subscribe my name, this A10th day ofOctober, 1925.

. EARLr. Pinnen.`

